https://medium.com/@georgi.tumasyan21/var-let-const-%D5%B8-%D6%80%D5%B6-%D5%A7-%D5%BF%D5%A1%D6%80%D5%A2%D5%A5%D6%80%D5%B8%D6%82%D5%A9%D5%B5%D5%B8%D6%82%D5%B6%D5%A8-890289f2d025
